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Elite Builder (for 80% Jig) Tooling



Cutting and drilling your 80% lower receiver can be a breeze, or a pain -- it truly depends on the drill bits and end mill bits you use to machine it. That’s why you need to invest in the highest quality bits available, like this 80% Jig Tool Kit from AMT. These HSS bits are designed for the Elite Builder Jig, but they can be used with any 80% lower receiver designed for the AR-15 and AR-9.

See the Elite Builder Jig's instructions here!

Aluminum-Ready HSS Bits

We like to offer HSS (high-speed steel) bits for completing 80% lowers because they provide some of the best results when machining billet (6061-T6) or forged (7075-T6) aluminum. Sized bit shafts reduce flex while working, and razor-sharp flutes make quick work of raw metal with clean, polished results.

Made in the USA Lifetime Warranty

Shipping Restrictions

AR-15Lowerreceivers.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally. Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website. We try our best to keep our shipping page current, but laws change daily.

We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.